UUIDGenerator = {
	/* randomUUID.js - Version 1.0
	 * 
	 * Copyright 2008, Robert Kieffer
	 * 
	 * This software is made available under the terms of the Open Software License
	 * v3.0 (available here: http://www.opensource.org/licenses/osl-3.0.php )
	 *
	 * The latest version of this file can be found at:
	 * http://www.broofa.com/Tools/randomUUID.js
	 *
	 * For more information, or to comment on this, please go to:
	 * http://www.broofa.com/blog/?p=151
	 */
	 
	/**
	 * Create and return a "version 4" RFC-4122 UUID string.
	 */
	randomUUID: function(){
	  var s = [], itoh = '0123456789ABCDEF';
	 
	  // Make array of random hex digits. The UUID only has 32 digits in it, but we
	  // allocate an extra items to make room for the '-'s we'll be inserting.
	  for (var i = 0; i < 36; i++) s[i] = Math.floor(Math.random()*0x10);
	 
	  // Conform to RFC-4122, section 4.4
	  s[14] = 4;  // Set 4 high bits of time_high field to version
	  s[19] = (s[19] & 0x3) | 0x8;  // Specify 2 high bits of clock sequence
	 
	  // Convert to hex chars
	  for (var i = 0; i < 36; i++) s[i] = itoh[s[i]];
	 
	  // Insert '-'s
	  s[8] = s[13] = s[18] = s[23] = '-';
	 
	  return s.join('');
	}
}